MPEC 2004-S17 : COMET P/2004 NL21 (LINEAR)
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M.P.E.C. 2004-S17 Issued 2004 Sept. 18, 16:38 UT
The Minor Planet Electronic Circulars contain information on unusual
minor planets and routine data on comets. They are published
on behalf of Commission 20 of the International Astronomical Union by the
Minor Planet Center, Smithsonian Astrophysical Observatory,
Cambridge, MA 02138, U.S.A.
Supported in part by the Brinson Foundation
Prepared using the Tamkin Foundation Computer Network
MPC@CFA.HARVARD.EDU
URL http://cfa-www.harvard.edu/iau/mpc.html ISSN 1523-6714
COMET P/2004 NL21 (LINEAR)
Observations:
PK04N21L C2004 09 06.61801 22 31 52.81 -07 03 03.2 16.3 T ES017E12
PK04N21L C2004 09 06.62363 22 31 52.49 -07 03 00.3 16.4 T ES017E12
PK04N21L C2004 09 06.62927 22 31 52.12 -07 02 57.6 16.3 T ES017E12
PK04N21L C2004 09 06.63490 22 31 51.76 -07 02 54.9 16.3 T ES017E12
PK04N21L C2004 09 09.28231 22 29 19.92 -06 40 45.3 16.5 N ES017699
PK04N21L C2004 09 09.29203 22 29 19.35 -06 40 40.6 ES017699
PK04N21L C2004 09 09.30175 22 29 18.82 -06 40 34.9 ES017699
PK04N21L C2004 09 09.31146 22 29 18.25 -06 40 30.1 ES017699
PK04N21L C2004 09 13.17717 22 25 46.43 -06 07 50.9 18.0 N ES017704
PK04N21L C2004 09 13.18865 22 25 45.78 -06 07 44.4 18.1 N ES017704
PK04N21L C2004 09 13.20020 22 25 45.08 -06 07 39.0 18.0 N ES017704
PK04N21L C2004 09 13.21167 22 25 44.50 -06 07 32.6 17.9 N ES017704
PK04N21L C2004 09 13.22316 22 25 43.76 -06 07 27.1 17.8 N ES017704
PK04N21L C2004 09 15.20058 22 24 01.21 -05 50 45.0 16.7 N ES017699
PK04N21L C2004 09 15.21517 22 24 00.46 -05 50 37.7 ES017699
PK04N21L C2004 09 15.22974 22 23 59.62 -05 50 30.6 ES017699
PK04N21L C2004 09 15.24435 22 23 58.87 -05 50 23.2 ES017699
PK04N21L C2004 09 18.51252 22 21 20.22 -05 22 34.3 16.4 T ES017E12
PK04N21L C2004 09 18.52093 22 21 19.86 -05 22 29.4 16.5 T ES017E12
PK04N21L C2004 09 18.52936 22 21 19.44 -05 22 24.8 16.4 T ES017E12
PK04N21L C2004 09 18.53779 22 21 19.01 -05 22 21.1 16.5 T ES017E12
Observer details:
699 Lowell Observatory-LONEOS. Observer B. A. Skiff. 0.59-m LONEOS Schmidt
+ CCD.
704 Lincoln Laboratory ETS, New Mexico. Observers M. Blythe, F. Shelly,
M. Bezpalko, R. Huber, L. Manguso, D. Torres, R. Kracke, M. McCleary,
H. Stange, A. Milner. Measurers J. Stuart, R. Sayer, J. Evans, J. Kommers.
1.0-m f/2.15 reflector + CCD.
E12 Siding Spring Survey. Observers R. H. McNaught, G. J. Garradd, S. Larson,
E. Beshore, E. Christensen, R. Hill. Measurers R. H. McNaught,
E. C. Beshore, E. J. Christensen, G. J. Garradd, R. E. Hill, S. M. Larson.
0.5-m Uppsala Schmidt + CCD.
Orbital elements:
P/2004 NL21 (LINEAR)
Epoch 2004 Oct. 2.0 TT = JDT 2453280.5
T 2004 Oct. 13.02529 TT MPC
q 2.0828057 (2000.0) P Q
n 0.12405013 Peri. 17.99454 +0.99086018 +0.06948854
a 3.9817247 Node 337.06189 -0.12726793 +0.76566340
e 0.4769087 Incl. 17.25686 +0.04470992 +0.63947706
P 7.95
Residuals in seconds of arc
040715 704 0.1- 0.4- 040808 699 0.3- 0.3- 040908 704 0.2+ 0.8+
040715 704 0.8+ 0.3- 040809 704 (0.6+ 2.6-) 040908 704 0.2+ 0.9+
040715 704 0.0 0.3- 040809 704 1.2- 0.9- 040909 704 0.1+ 2.0+
040715 704 0.3- 0.5+ 040809 704 1.0- 0.1+ 040909 704 0.4+ 0.2+
040716 704 0.2- 0.1- 040809 704 1.4+ 0.4+ 040909 704 0.2+ 0.6+
040716 704 0.5- 0.1- 040809 704 0.3- 0.4- 040909 704 0.1- 0.3-
040716 704 0.9+ 1.2+ 040810 704 0.1+ 0.1- 040909 704 0.1- 0.2+
040722 699 0.8- 0.3- 040810 704 0.5+ 0.0 040909 699 1.3- 0.7-
040722 699 0.4- 0.4+ 040810 704 0.1+ 0.0 040909 699 1.2- 0.9-
040722 699 0.1- 0.5+ 040810 704 0.7- 0.0 040909 699 0.5- 0.2-
040722 699 0.4- 0.7- 040810 704 0.2- 0.2+ 040909 699 0.4- 0.3-
040727 704 0.6+ 0.5- 040812 704 0.2- 0.1+ 040913 704 1.3+ 0.1+
040727 704 0.2+ 0.1- 040812 704 0.4- 0.2+ 040913 704 1.1+ 0.8+
040727 704 0.6- 0.3+ 040812 704 0.6- 0.1+ 040913 704 0.2+ 0.3+
040727 704 0.6+ 0.3+ 040812 704 0.2+ 0.4+ 040913 704 1.1+ 0.9+
040728 704 0.2+ 1.2- 040812 704 1.3- 0.1- 040913 704 0.4- 0.6+
040728 704 0.8+ 0.1- 040823 691 1.3+ 0.1+ 040915 699 0.5- 0.6-
040728 704 0.0 0.6+ 040823 691 1.4+ 0.0 040915 699 0.1- 0.7-
040808 704 0.8+ 0.0 040823 691 1.5+ 0.1+ 040915 699 1.0- 1.0-
040808 704 0.8+ 0.1+ 040906 E12 0.9- 0.8- 040915 699 0.6- 1.0-
040808 704 0.6+ 0.1+ 040906 E12 0.5- 0.8- 040918 E12 0.4- 0.6-
040808 704 0.1+ 0.5+ 040906 E12 0.9- 0.9- 040918 E12 0.4+ 0.0
040808 704 1.4+ 0.7+ 040906 E12 1.2- 1.1- 040918 E12 0.3+ 0.3+
040808 699 1.1- 0.3- 040908 704 0.8+ 0.4+ 040918 E12 0.1+ 0.3-
040808 699 1.2- 0.2- 040908 704 0.9+ 1.2+
040808 699 0.7- 0.5- 040908 704 1.0+ 1.2+
Ephemeris:
P/2004 NL21 (LINEAR)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2004 09 12 22 26.82 -06 17.7 1.107 2.098 166.2 6.6 17.3
2004 09 22 22 18.80 -04 53.1 1.137 2.090 155.0 11.7 17.6
2004 10 02 22 13.48 -03 28.4 1.188 2.085 144.3 16.2 17.8
2004 10 12 22 11.39 -02 03.8 1.258 2.083 134.5 20.0 18.1
2004 10 22 22 12.70 -00 38.6 1.343 2.084 125.4 22.9 18.3
2004 11 01 22 17.18 +00 48.5 1.440 2.089 117.1 25.0 18.5
2004 11 11 22 24.46 +02 18.5 1.547 2.096 109.5 26.4 18.8
2004 11 21 22 34.15 +03 52.3 1.661 2.107 102.4 27.2 18.9
Brian G. Marsden (C) Copyright 2004 MPC M.P.E.C. 2004-S17
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